B3794:61 2018 GMC Sierra Code - Cruise Control Function Request Circuit
Quick Answer
The B3794:61 diagnostic trouble code (DTC) for the 2018 GMC Sierra relates to the Cruise Control Function Request Circuit. Common causes include Faulty cruise control switch, Damaged wiring or connectors in the cruise control circuit, Defective cruise control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B3794:61 2018 GMC Sierra indicates Cruise Control Function Request Circuit.
- Common causes
- Common causes include Faulty cruise control switch, Damaged wiring or connectors in the cruise control circuit, Defective cruise control module.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code B3794:61 2018 GMC Sierra Description
The B3794:61 diagnostic trouble code (DTC) for the 2018 GMC Sierra relates to the Cruise Control Function Request Circuit. This code indicates that there is a malfunction in the circuit responsible for receiving and processing the cruise control function requests from the driver. The cruise control system allows the driver to set a desired speed for the vehicle to maintain automatically, providing convenience and reducing driver fatigue on long journeys.
Common Causes of B3794:61 2018 GMC Sierra
- Faulty cruise control switch.
- Damaged wiring or connectors in the cruise control circuit.
- Defective cruise control module.
- Issues with the vehicle's electronic control unit (ECU).
- Corrosion or poor connections in the cruise control system.
Symptoms of B3794:61 2018 GMC Sierra
- Inability to engage cruise control.
- Cruise control disengaging unexpectedly.
- Check engine light illuminated.
- Erratic vehicle speed while cruise control is active.
- Loss of throttle response.
How to Fix B3794:61 2018 GMC Sierra
- Begin by conducting a thorough visual inspection of the cruise control components, looking for any visible damage or loose connections.
- Use a multimeter to test the continuity of the wiring in the cruise control circuit to identify any open or short circuits.
- Test the cruise control switch and module for proper functionality, replacing any components that are found to be faulty.
- Clear the DTC from the vehicle's computer using a diagnostic scan tool and test the cruise control system to ensure proper operation.
- If the issue persists, consult a professional technician for further diagnosis and potential repairs.
Cost to Fix B3794:61 2018 GMC Sierra
The typical repair costs for addressing the B3794:61 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, parts for the cruise control system, such as switches or modules, can range from $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair bill potentially amounting to a few hundred dollars. However, it's important to note that actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to obtain quotes from local auto repair shops for a more accurate estimate.
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Frequently Asked Questions about B3794:61 2018 GMC Sierra Code
What does the OBDII code B3794:61 mean for a 2018 GMC Sierra?
It indicates an issue with the Cruise Control Function Request Circuit, specifically an invalid signal has been detected.
What are the common symptoms of code B3794:61 in a 2018 GMC Sierra?
Symptoms may include cruise control not engaging, cruise control disengaging unexpectedly, or the cruise control system being completely non-functional.
What causes the B3794:61 code to appear in a 2018 GMC Sierra?
Common causes include a malfunctioning cruise control switch, damaged wiring or connectors in the circuit, or issues with the body control module (BCM).
Can a faulty cruise control switch trigger code B3794:61?
Yes, a faulty cruise control switch can send invalid signals, which may trigger this code.
How can you diagnose code B3794:61 in a 2018 GMC Sierra?
Start by visually inspecting the cruise control switch, wiring, and connectors. Use a diagnostic scan tool to check for related codes and monitor live data from the cruise control system.
Can code B3794:61 impact other vehicle systems?
This code typically affects only the cruise control system, but in rare cases, it may interact with other systems controlled by the BCM.
Is it safe to drive a 2018 GMC Sierra with code B3794:61?
Yes, the vehicle is generally safe to drive, but you won’t be able to use the cruise control feature until the issue is resolved.
How do you fix code B3794:61 in a 2018 GMC Sierra?
Repairs may involve replacing the cruise control switch, repairing damaged wiring, or reprogramming/replacing the body control module.
Can a software update resolve the B3794:61 code?
In some cases, a software update for the BCM may resolve the issue if it’s related to a programming error.
Do you need a professional to fix code B3794:61?
While some fixes like inspecting wiring can be done at home, diagnosing and repairing BCM-related issues typically require professional equipment and expertise.
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